CN201562068U - Novel total station optical system - Google Patents
Novel total station optical system Download PDFInfo
- Publication number
- CN201562068U CN201562068U CN2009202520236U CN200920252023U CN201562068U CN 201562068 U CN201562068 U CN 201562068U CN 2009202520236 U CN2009202520236 U CN 2009202520236U CN 200920252023 U CN200920252023 U CN 200920252023U CN 201562068 U CN201562068 U CN 201562068U
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- lens group
- light path
- luminotron
- objective lens
- image transferring
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Abstract
A novel total station optical system comprises a reticule plate, a focusing lens group, a luminous tube, an inner optical path image transferring lens, an objective lens group, a beam splitter, a reflector, a cylindrical reflector and a forking optical fiber, wherein the reticule plate, the focusing lens group, the beam splitter and the objective lens group are positioned on the same optical axis; the focusing lens group is arranged between the reticule plate and the objective lens group; the beam splitter is positioned between the objective lens group and the focusing lens group; and the reflector is placed at an intersection point of the luminous tube and an optical path of the cylindrical reflector. Light emitted by the luminous tube can be reflected on to the cylindrical reflector by adjusting the angle of the reflector; the cylindrical reflector is positioned between the beam splitter and the objective lens group; the luminous tube, the inner optical path image transferring lens and the reflector are positioned on the same optical axis; the inner optical path image transferring lens is arranged in front of the luminous tube; one end of the forking optical fiber is connected with the inner optical path image transferring lens; and the other end of the forking optical fiber is connected with the cylindrical reflector.
Description
Technical field
The utility model relates to the communication means of light signal in the total powerstation technical field, particularly total powerstation.
Background technology
The electronic range measurement principle is utilized electromagnetic rectilinear propagation and velocity of wave stable properties exactly, by measuring the ripple propagation delay time between 2 and then recording the process of air line distance indirectly.
Total powerstation has utilized the principle of electronic range measurement, launch beam of laser by laser instrument, the thing that is reflected reflects in the other direction, the light that reflects is received by the receiver, and realizes range finding through calculating: light is that light cuts the time that light is propagated in the time delay that point-to-point transmission is propagated in the instrument internal light path in the time that tested actual range passes through.So just can accurately calculate tested distance.Be S=C* Δ t/2; Wherein S is tested distance, and C is the light velocity, and Δ t is the mistiming that light is propagated.
The means of existing collection Δ t are to adopt 2 optical fiber to bear the propagation of the light of emission and reception respectively; Reach the conversion of inside and outside light path simultaneously with the driven by motor mechanical parts, calculate T.T. that bright dipping propagates and light respectively in time that instrument internal is propagated.So just require to leave enough spaces in the structural design so that can finish not the disturbing mutually of emission light path and the receiving light path instability of measuring accuracy (otherwise can cause) in the light path design.How gordian technique just reduces the measuring accuracy that harassing in each light path improves instrument in the design of total powerstation.
Mainly form in the existing light path by graticule I, luminotron II, launching fiber III, focusing lens group IV, Amici prism V, objective lens VI, reception optical fiber V II, interior light path image transferring lens VIII.Promptly (being mainly graticule I, focusing lens group IV, objective lens VI) in the light path of common telescopic system has increased the light path of ranging unit (mainly being made of luminotron II, launching fiber III, Amici prism V, reception optical fiber V II, interior light path image transferring lens VIII).The effect of Amici prism is to separate transmitting and receiving light path in this light path.But the difficulty of processing of Amici prism is bigger, and it is quite strict to the requirement of eyeglass angle, and also tighter for the requirement of assembling, has not only increased labour intensity, has also increased difficulty.During use, the light that luminotron sends is launched through one of them ear of Amici prism, reflects back into Amici prism through external object, spreads out of from the ear of the other end of Amici prism again afterwards, is sent in the microprocessor after being received by optical fiber.Because of the light launched and the reflected light of returning all pass through same prism, be easy to cause between the light path light to harass.
The utility model content
To keep away unavoidable light path in the prior art and harass problem in order to overcome, improve measuring accuracy, the utility model provides a novel total powerstation optical system, promptly uses ripe bifurcation fiber technology to be used in the isolation that reaches in the light path design between the light path, to obtain purer measuring-signal.
Novel total powerstation optical system comprises graticule, focusing lens group, luminotron, interior light path image transferring lens, objective lens, it is characterized in that, also comprises spectroscope, reflective mirror, cylindrical mirror and bifurcation fiber; Wherein, graticule, the focusing lens group, spectroscope, objective lens is on the same optical axis, focusing lens is between graticule and objective lens group, spectroscope is between objective lens and the focusing lens group, reflective mirror is placed on the intersection point of luminotron and cylindrical mirror light path, main effect is exactly the light beam half-twist with luminotron, the angle of adjusting reflective mirror can reflex to the light of luminotron emission on the cylindrical mirror, cylindrical mirror is between spectroscope and the objective lens, luminotron, interior light path image transferring lens, reflective mirror is on the same optical axis, interior light path image transferring lens is arranged at the front of luminotron, one end of bifurcation fiber is connected with interior light path image transferring lens, and the other end is connected with cylindrical mirror.
In this light path design, whole optical path is relatively simplified, and the designing requirement usage space is less, and the workload that needs in the light path assembling simultaneously to be adjusted reduces, and is satisfied the status requirement of whole optical path fully by physical construction.Reduced the difficulty of optical mirror slip processing.The utility model is according to the structure and the space of total powerstation, the redesign light path system, cancelled original Amici prism, what replace it is the spectroscope of a cylindrical mirror and an almost flat glass, satisfy the reception of whole optical path respectively with an optical fiber,, can curve because optical fiber is flexible, saved the design space greatly, made instrument more and more lighter and handier.
Compared with prior art, the beneficial effects of the utility model are: owing to adopted an optical fiber to stop most extraneous parasitic light, the signal degree of purity of reception is increased greatly, thereby improved measuring accuracy.
Description of drawings
Fig. 1 is a structural representation of the present utility model.Wherein 1 is that graticule, 2 is that focusing lens group, 3 is that luminotron, 4 is that interior light path image transferring lens, 5 is that spectroscope, 6 is that reflective mirror, 7 is that objective lens, 8 is that cylindrical mirror, 9 is a bifurcation fiber.
Fig. 2 is the prior art structural representation.Wherein I is a graticule, and II luminotron, III are launching fiber, and IV is the focusing lens group, and V is that Amici prism, VI are that objective lens, VII are interior light path image transferring lens for reception optical fiber, VIII.
Embodiment
Referring to accompanying drawing 1, novel total powerstation optical system comprises graticule 1, focusing lens group 2, luminotron 3, interior light path image transferring lens 4, objective lens 7, it is characterized in that, also comprises spectroscope 5, reflective mirror 6, cylindrical mirror 8, bifurcation fiber 9; Wherein, graticule 1, focusing lens group 2, spectroscope 5, objective lens 7 are on the same optical axis, and focusing lens is between graticule and objective lens group, and the object image-forming that plays different distance carries out the variation of focal length; Spectroscope 5 is between objective lens and the focusing lens group, carries out the separation of distance measuring light beam; Reflective mirror 6 is placed on the intersection point of luminotron 3 and cylindrical mirror 8 light paths, and main effect is exactly the light beam half-twist with luminotron, and the angle of adjusting reflective mirror can reflex to the light of luminotron emission on the cylindrical mirror 8, sends through cylindrical mirror.Cylindrical mirror 8 should be between spectroscope 5 and the objective lens 7, and the light that sends is directly sent after objective lens; After the external world reflects, be sent to above the spectroscope 5, after the total reflection of eyeglass coating, be in 90 ° of locational bifurcation fiber 9 one of them branches' receptions of reflective mirror 6 optical axises by cylindrical mirror 6; After receiving the instruction of microprocessor, interior light path image transferring lens 4 is arranged at the front of luminotron 3, the light that the light path image transferring lens sends in being received by another branch of bifurcation fiber 9.Luminotron 3, interior light path image transferring lens 4, reflective mirror 6 are on the same optical axis, and an end of bifurcation fiber 9 is connected with interior light path image transferring lens 4, and the other end is connected with cylindrical mirror 8.
Described luminotron 3 is LASER Discharge Tube.
Principle of work: luminotron 3 sends light after reflective mirror 6 reflexes to (installation dimension herein can directly be guaranteed by mechanical parts) on the cylindrical mirror 8.Run into extraneous reflecting object, the light beam that reflects is totally reflected to another dip plane of cylindrical mirror 8 through spectroscope 5, a branch that is bifurcated optical fiber 9 receives, this signal that bifurcation fiber will receive is transferred in the microprocessor of instrument, the time that this process experienced is the T.T. between measured object and the instrument, light path image transferring lens 4 blocks the light that luminotron is launched in the microprocessor control driven by motor then, this time receives through another branch that interior light path image transferring lens 4 directly is bifurcated optical fiber, be sent to equally then in the microprocessor, the time that this process experienced is the time of light in the instrument internal propagation.Just can calculate distance between 2 according to these two mistiming Δ t.
This new light path design is at first isolated the two paths of signals that transmits and receives fully, can not produce between mutually and harass, thereby improve the measuring accuracy of instrument.The processing of new in addition optical element is simple, has reduced the difficulty of processing of optical element, thus indirect raising the quality of instrument.
Claims (2)
1. novel total powerstation optical system comprises graticule, focusing lens group, luminotron, interior light path image transferring lens, objective lens, it is characterized in that, also comprises spectroscope, reflective mirror, cylindrical mirror and bifurcation fiber; Wherein, graticule, the focusing lens group, spectroscope, objective lens is on the same optical axis, focusing lens is between graticule and objective lens group, spectroscope is between objective lens and the focusing lens group, reflective mirror is placed on the intersection point of luminotron and cylindrical mirror light path, the angle of adjusting reflective mirror can reflex to the light of luminotron emission on the cylindrical mirror, cylindrical mirror is between spectroscope and the objective lens, luminotron, interior light path image transferring lens, reflective mirror is on the same optical axis, interior light path image transferring lens is arranged at the front of luminotron, one end of bifurcation fiber is connected with interior light path image transferring lens, and the other end is connected with cylindrical mirror.
2. novel total powerstation optical system according to claim 1 is characterized in that described luminotron is a LASER Discharge Tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202520236U CN201562068U (en) | 2009-12-28 | 2009-12-28 | Novel total station optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202520236U CN201562068U (en) | 2009-12-28 | 2009-12-28 | Novel total station optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562068U true CN201562068U (en) | 2010-08-25 |
Family
ID=42627216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202520236U Expired - Fee Related CN201562068U (en) | 2009-12-28 | 2009-12-28 | Novel total station optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562068U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595615A (en) * | 2017-01-22 | 2017-04-26 | 苏州光仪器有限公司 | Optical path system of total station instrument |
| CN117538888A (en) * | 2023-12-20 | 2024-02-09 | 中测国检(北京)科技有限责任公司 | Long range and high performance total powerstation ranging system |
-
2009
- 2009-12-28 CN CN2009202520236U patent/CN201562068U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595615A (en) * | 2017-01-22 | 2017-04-26 | 苏州光仪器有限公司 | Optical path system of total station instrument |
| CN117538888A (en) * | 2023-12-20 | 2024-02-09 | 中测国检(北京)科技有限责任公司 | Long range and high performance total powerstation ranging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20111228 |